Midea MC-SU30-RN1L

Aqua Tempo Super II
201709 79
Part
4 - Diagnosis and Troubleshooting
4.14 P9 Troubleshooting
Digital display output 4.14.1
Description 4.14.2
 High temperature difference between water side heat exchanger water inlet and water outlet temperatures
protection.
 All units stop running.
 Error code is displayed on main PCB and user interface.
Possible causes 4.14.3
 Temperature sensor not connected properly or has malfunctioned.
 Water piping contains air.
 Insufficient water flow.
 Main PCB damaged.